Phase equilibria and viscosities in ferrochromium smelting slags

Jak, E., Zhao, B. and Hayes, P. (2011) Phase equilibria and viscosities in ferrochromium smelting slags. Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy, 120 4: 205-210. doi:10.1179/1743285511Y.0000000008

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Author Jak, E.
Zhao, B.
Hayes, P.
Title Phase equilibria and viscosities in ferrochromium smelting slags
Journal name Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy   Check publisher's open access policy
ISSN 0371-9553
1743-2855
Publication date 2011-11
Sub-type Article (original research)
DOI 10.1179/1743285511Y.0000000008
Volume 120
Issue 4
Start page 205
End page 210
Total pages 6
Place of publication W Yorks, United Kingdom
Publisher Maney Publishing
Collection year 2012
Language eng
Formatted abstract
The system Al2O3-MgO-SiO2-CaO-Fe 2O3-Cr2O3 forms the basis of slags used in the direct and electric arc smelting of ferrochromium. While the importance of slag chemistry on metallurgical performance has been recognised, there remain nevertheless aspects of the phase chemistry and physicochemical properties of these high melting temperature slags that have yet to be fully characterised. Using the combination of phase equilibria experimental studies and thermodynamic and viscosity modelling, it is now possible to provide accurate descriptions of these systems. The use of new experimental and advanced material characterisation techniques involving primary phase support technique/quenching/electron probe X-ray microanalysis enables accurate determination of liquidus and subliquidus equilibria in these complex slag systems. Experimental data are used to develop advanced thermodynamic models, and databases of these complex oxide systems are incorporated into the internationally used computer package FactSage to produce the most comprehensive description of the chemistry of these systems yet available. Information on slag structure from the quasi-chemical slag model has been used to develop slag viscosity models. The application of these advanced tools and techniques is illustrated with the prediction and analysis of slag properties in ferrochromium smelting to assist in identifying optimum process conditions. © 2011 Institute of Materials, Minerals and Mining and The AusIMM.
Keyword Phase Equilibria
Viscosities
Slags
Ferrochromium
Smelting
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes This paper is part of a special issue from the Seetharaman – Seminar: Materials Processing Towards Properties

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2012 Collection
 
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Created: Thu, 08 Dec 2011, 10:06:13 EST by Dr Baojun Zhao on behalf of School of Chemical Engineering